Not really, though. You can't replicate continuous barriers or any other path dependent products using vanillas.if you know how to price your options, have a decent volatility modelling, vanilla options is good enough to do the job
Ps. In equity derivatives, flow exotics are hugely efficient and tightly priced. Usually, you'd get a bit of a shakedown on the unwind but most of these are short dated enough not to be concerned about it.